Polaris 2014 Sportsman 570 EF Service Manual page 131

3. Remove the oil pump sprocket bolts(3) and washers.
Discard the bolts and replace with new for assembly.
Remove the sprockets and chain from the engine.
4. Inspect the oil pump chain for worn or missing rollers
or damage. Chain should be replaced as a set with
sprockets if sprocket teeth are worn.
NOTE: The larger oil pump sprocket mounts to
the balance shaft extension, the smaller oil pump
sprocket mounts to the oil pump shaft.
9924871 R03 - 2014 Polaris Sportsman® 570 EFI Service Manual
5. Remove the upper oil pump sprocket spacer(4).
6. Remove the bolts (5) securing the oil pump cover to
the crankcase.
7. Grasp the oil pump shaft (6) and pull it outward to
remove the shaft, oil pump cover and inner oil pump
gerotor. This will prevent the oil pump drive pin from
falling out and into the crankcase.
NOTE: The gerotor set has (2) orientation dots
that must be installed inward upon assembly
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